Connector tube



FIG. 1 is a perspective view of a connector tube according to our new design;

FIG. 2 is a reverse perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The dashed lines represent environment or structure and do not form part of the claimed design. 

The ornamental design for a connector tube, as shown and described. 